diff --git a/mathbot/calculator/parser.py b/mathbot/calculator/parser.py
index bd62e725..6267474d 100644
--- a/mathbot/calculator/parser.py
+++ b/mathbot/calculator/parser.py
@@ -704,7 +704,7 @@ def tokenizer(original_string, ttypes, source_name = '__unknown__'):
 	('string', r'"(?:\\.|[^\\"])*"'),
 	('string', r'“(?:\\.|[^\\”])*”'),
 	('glyph', r';\\.|;[^\\]'),
-	('word', r'π|τ|∞|[a-zA-Z_][a-zA-Z0-9_]*'),
+	('word', r'π|τ|∞|φ|ϕ|[a-zA-Z_][a-zA-Z0-9_]*'),
 	# ('die_op', r'd'),
 	('pow_op', r'\^'),
 	('superscript', r'[⁰¹²³⁴⁵⁶⁷⁸⁹]+'),
diff --git a/mathbot/calculator/runtime.py b/mathbot/calculator/runtime.py
index 4af83230..d45b8bd4 100644
--- a/mathbot/calculator/runtime.py
+++ b/mathbot/calculator/runtime.py
@@ -151,6 +151,10 @@ def reduce_to_float(value):
 	'π': sympy.pi,
 	'τ': sympy.pi * 2,
 	'tau': sympy.pi * 2,
+	'φ': sympy.S.GoldenRatio,
+	'phi': sympy.S.GoldenRatio,
+	'ϕ': (1 - math.sqrt(5)) / 2,
+	'phiconj': (1 - math.sqrt(5)) / 2,
 	'true': True,
 	'false': False
 }
@@ -159,8 +163,12 @@ def reduce_to_float(value):
 FIXED_VALUES_EXPORTABLE = {
 	'π': math.pi,
 	'τ': math.pi * 2,
+	'φ': (1 + math.sqrt(5)) / 2,
+	'ϕ': (1 - math.sqrt(5)) / 2,
 	'pi': math.pi,
 	'tau': math.pi * 2,
+	'phi': (1 + math.sqrt(5)) / 2,
+	'phiconj': (1 - math.sqrt(5)) / 2,
 	'true': True,
 	'false': False
 }